To sharpen the blade of a knife by rubbing it against a surface,
which of the following will be most suitable?
(a) stone (c) wooden block
(b) plastic block (d) glass block
NCERT Class VIII
Science - Exemplar Problems
Chapter 12. Friction
Answers
Answered by
31
The answer is: (a) stone.
Answered by
26
The answer is: (a) stone.
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